{"collection":"aor","html_url":"https://unchartedknowledge.5gfusion.net/browse/aor/dv/0614.htm","path":"aor/dv/0614.htm","source_url":"https://sacred-texts.com/aor/dv/0614.htm","text":"PAPER FOR DRAWING UPON IN BLACK BY THE AID OF YOUR SPITTLE.\nTake powdered gall nuts and vitriol, powder them and spread them on\npaper like a varnish, then write on it with a pen wetted with\nspittle and it will turn as black as ink.","title":"Vol. I: IX. The Practice of Painting: 614.","type":"page"}